Infrared Spectroscopic Investigations of J-aggregates of Protonated Tetraphenylporphine  

作　　者：ZHOU Mi LU Guo-hui GAO Shu-qin LI Zuo-wei 

机构地区：[1]State Key Laboratory of Superhard Materials, College of Physics, Jilin University, Changchun 130023, China

出　　处：《Chemical Research in Chinese Universities》2009年第2期257-260,共4页高等学校化学研究（英文版）

基　　金：Supported by the National Natural Science Foundation of China(No.10774057).

摘　　要：Protonated tetraphenylporphine（H2TPP） J-aggregates were prepared by aggregation on the liquid-air interface. Using FTIR spectroscopy, the authors observed the infrared absorption spectra of H2TPP and its J-aggregates. The IR spectra of H2TPP J-aggregates show significant changes compared with that of HETPP monomer. Intensity changes（e.g., strong enhancement of the in-plane vibronic mode and weakening of the out-of-plane vibronic mode of phenyl and porphyrin skeletal） were interpreted on the basis of stacking effects. Observation of the same type of bands collapse into single band was explained by the increase in the symmetry of H2TPP molecules. And the new bands at 1635 and 3407 cm^-1 indicate the aggregates containing a large amount of bound water.Protonated tetraphenylporphine（H2TPP） J-aggregates were prepared by aggregation on the liquid-air interface. Using FTIR spectroscopy, the authors observed the infrared absorption spectra of H2TPP and its J-aggregates. The IR spectra of H2TPP J-aggregates show significant changes compared with that of HETPP monomer. Intensity changes（e.g., strong enhancement of the in-plane vibronic mode and weakening of the out-of-plane vibronic mode of phenyl and porphyrin skeletal） were interpreted on the basis of stacking effects. Observation of the same type of bands collapse into single band was explained by the increase in the symmetry of H2TPP molecules. And the new bands at 1635 and 3407 cm^-1 indicate the aggregates containing a large amount of bound water.

关 键 词：J-AGGREGATE Meso-tetraphenylporphine Stacking effect 

分 类 号：O657.33[理学—分析化学] TQ127.11[理学—化学]